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Three-Axis Digital Gyro Embeds Power-Management Capabilities for Consumer Applications

Tue, 04/13/2010 - 7:41am
STMicroelectronics’ new high-performance 3-axis digital-output gyroscope embeds a FIFO (first-in first-out) memory block for smarter power management. The L3G4200DH gyroscope integrates an on-chip FIFO memory block that stores up to 96 levels, split in 32 sample sets of x-, y-, and z-axis data. This feature removes the need for continuous communication of the angular rate data between the sensor and the host processor, which can then spend more time in a sleep mode and dramatically decrease the overall system power consumption. Application designers can program the FIFO for several different operating modes to raise a dedicated watermark (reference) interrupt when the memory is filled to a desired level. The L3G4200DH 3-axis digital gyroscope has been designed and produced using the same manufacturing-process technology that ST has already successfully applied to more than 700 million motion sensors sold in the market. All of ST’s MEMS gyroscopes employ an industry-unique concept of a single sensing structure for motion measurement along all three orthogonal axes. This innovative design approach eliminates all interference between the axes, significantly increasing accuracy and reliability in a wide range of consumer and industrial applications, including advanced user interfaces for gaming and portable devices, motion tracking, and camera image stabilization.
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